β-Chloroamine hydrochlorides, produced stereospecifically and regiospecifically from aziridines with anhydrous hydrogen chloride in ether, are condensed with sodium carbonate in dry DMSO to afford isomerically pure 2-oxazolidinones.
2-Cyclopropylindoloquinones and Their Analogues as Bioreductively Activated Antitumor Agents: Structure−Activity <i>in Vitro</i> and Efficacy <i>in Vivo</i>
作者:Matthew A. Naylor、Mohammed Jaffar、John Nolan、Miriam A. Stephens、Susan Butler、Kantilal B. Patel、Steven A. Everett、Gerald E. Adams、Ian J. Stratford
DOI:10.1021/jm9608422
日期:1997.7.1
2-cyclopropyl and 5-(2-methylaziridinyl) derivatives, and of these, 5-(aziridin-1-yl)-2-cyclopropyl-3-(hydroxymethyl)-1-methylindole-4 ,7-dione (21) and 3-(hydroxymethyl)-5-(2-methylaziridin-1-yl)-1,2-dimethylindole+ ++-4,7-dione (54) were evaluated in vivo. Both compounds showed antitumor activity both as single agents and in combination with radiation, with some substantial improvements over EO9 (3)
The first highly enantioselective desymmetrization of aziridines with phosphites has been developed. Excellent yields and enantio-selectivities were observed for the reaction with various aziridines using a new class of readily accessible chiral catalysts derived from 9-amino-9-deoxy-epi-cinchonas alkaloids. In studies probing the reaction mechanism, we observed some complexes for the cinchona alkaloid amide-Zn(II) by ESI-MS analysis